Oil Pump: Service and Repair

Removing and installing oil pump

Note:
^ The oil pump must not be disassembled and reassembled!
^ When carrying out work on the oil circuit, it must be ensured that no dirt gets into the engine!

Note: The oil pump can be replaced while installed.








Component overview

Removing oil pump
^ Before the oil pump can be removed, the oil pan must be dismantled. Removing and installing oil pane.





1. Unscrew chain tensioner of timing chain.





2. Unscrew the 4 fastening screws M6 x 25 of the oil suction pipe on the lower section of the crankcase.





3. Unscrew oil return line from the oil pump.





4. Remove the oil pump timing chain cover. To do this, unscrew the 2 fastening screws M5 x 25.





5. Release the 3 fastening screws M8 x 50.





6. Tilt the oil pump forwards.





7. Push the tensioning rail for the oil pump drive aside with a finger. At the same time, raise the oil pump slightly and tilt forwards.
8. Take the oil pump drive chain off the oil pump sprocket and remove the oil pump.
9. Unscrew the oil suction snorkel from the oil pump.

Installing oil pump

Note: In order to make it easier to install the oil suction pumps in the Cayenne Turbo (M48150), it should be ensured that the driving slits on the chain sprocket are as horizontal as possible.





1. Position the oil pump slanting forwards on the lower section of the crankcase. At the same time, put the drive chain over the chain sprocket.





2. Tighten the 3 fastening screws (M8 x 25) to 23 Nm (17 ft. lbs.).

Caution: Risk of damage!
^ The tensioning rail can become wedged in!
^ Ensure that the drive chain is tense!





3. Check that the tensioning rail is in the correct position. To do this, use a finger to push the tensioning rail away slightly from the chain. When doing this, the tensioning rail must be under pressure and tension the chain.





4. Mount the plastic cover of the chain sprocket. Tighten the 2 fastening screws M5 x 25 to 5.7 Nm (4 ft. lbs.).





5. Secure the oil return line. Tighten the fastening screw to 10 Nm (7.5 ft. lbs.).
6. Reinsert the cleaned oil pan.